== VK_NV_glsl_shader

*Name String*:: VK_NV_glsl_shader
*Extension Type*:: Device extension
*Registered Extension Number*:: 13
*Status*:: Draft.
*Last Modified Date*:: 14/02/2016
*Revision*:: 1
*IP Status*:: No known IP claims.
*Dependencies*::
    - This extension is written against version 1.0. of the Vulkan API.
*Contributors*::
    - Piers Daniell, NVIDIA
*Contacts*::
    - Piers Daniell (pdaniell 'at' nvidia.com)

This extension allows GLSL shaders written to the GL_KHR_vulkan_glsl
extension specification to be used instead of SPIR-V. The implementation
will automatically detect which the shader is SPIR-V or GLSL and 
compile it appropriatly.

=== New Object Types

=== New Enum Constants

  * Extending ename:VkResult:
  ** ename:VK_ERROR_INVALID_SHADER_NV

=== New Enums

=== New Structures

=== New Functions

=== Issues

=== Examples

**Example 1**

Passing in GLSL code

[source,{basebackend@docbook:C++:cpp}]
----------------------------------------
    char const vss[] =
        "#version 450 core\n"
        "layout(location = 0) in vec2 aVertex;\n"
        "layout(location = 1) in vec4 aColor;\n"
        "out vec4 vColor;\n"
        "void main()\n"
        "{\n"
        "    vColor = aColor;\n"
        "    gl_Position = vec4(aVertex, 0, 1);\n"
        "}\n"
    ;
    VkShaderModuleCreateInfo vertexShaderInfo = { VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO };
    vertexShaderInfo.codeSize = sizeof vss;
    vertexShaderInfo.pCode = vss;
    VkShaderModule vertexShader;
    vkCreateShaderModule(device, &vertexShaderInfo, 0, &vertexShader);
----------------------------------------

=== Version History

 * Revision 1, 2016-02-14 (Piers Daniell)
   - Initial draft